netdev - Re: [PATCH net-next v4 10/18] net/smc: implement ID-related operations of loopback

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Date: Wed, 18 Oct 2023 15:24:07 +0200
From: Alexandra Winter <wintera@...ux.ibm.com>
To: Wen Gu <guwen@...ux.alibaba.com>, kgraul@...ux.ibm.com,
        wenjia@...ux.ibm.com, jaka@...ux.ibm.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com
Cc: schnelle@...ux.ibm.com, gbayer@...ux.ibm.com, pasic@...ux.ibm.com,
        alibuda@...ux.alibaba.com, tonylu@...ux.alibaba.com,
        dust.li@...ux.alibaba.com, linux-s390@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v4 10/18] net/smc: implement ID-related
 operations of loopback



On 24.09.23 17:16, Wen Gu wrote:
> This patch implements GID/CHID/SEID related operations of SMC-D loopback device. In loopback device, GID is generated by UUIDv4 algorithm, CHID is reserved 0xFFFF, SEID is generated using the same algorithm as ISM device under s390 architecture, and is 0 and disabled under non-s390 architecture. Signed-off-by: Wen Gu <guwen@...ux.alibaba.com> ---

IMO, get_system_eid should not be part of smcd_ops. And should not be provided by an smcd device.
It is a system_eid is a global value that is valid for all smcd interfaces of this system (os instance).
So I think it should be provided by the smc module. 

I agree it needs to be architecture dependent and same as today for s390.